Load balancing descending device

ABSTRACT

A load balancing descending device for controlling the descent of a user descending on a rope carrying a load is provided. The rope has a decreasing rope free end as the user descends. The load balancing descending device comprises a first plate and a second plate. A first pin is positioned between the first plate and the second plate with the first pin spacing the first plate from and pivotally connecting the first plate to the second plate and the combined first plate and second plate having a first side and a second side. A second pin is positioned between the first plate and the second plate with the second pin spaced from the first pin. An attachment mechanism is formed in the first side of the combined first plate and second plate for attaching a user and/or load. The rope is wrapped in a serpentine manner about the first pin and the second pin between the first plate and the second plate with the rope free end exiting the combined first plate and second plate from the second side. As the user descends the rope, the length and weight of the rope free end decreases thereby causing the load balancing descending device to rotate moving the rope free end in a general direction from the first side toward the second side and automatically balancing the weight of the user and load against the weight of the rope free end in order to maintain a controlled rate of descent.

The present application is a continuation-in-part of pending U.S. patent Application Ser. No. 11/445,499, filed Jun. 1, 2006, entitled “Fast Rope Descending Device”, which claims benefit of priority of U.S. Provisional Patent Application Ser. No. 60/687,234, filed Jun. 3, 2005, entitled “Fast Rope Descending Device”.

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present invention relates to a load balancing descending device and, more particularly, it relates to a load balancing descending device for controlling the descent of a user.

2. Description of the Prior Art

Soldiers who descend from helicopters into combat zones do not have the luxury of using standard rappel devices to control their rate of descent. It takes too long to engage and disengage the devices, the ropes are so thin that they get sucked into the helicopter's rotors and they typically allow only one soldier on the rope at a time. Additionally, the ropes typically apply friction in proportion to the amount of rope between the device and the ground. As the descending soldier approaches the ground there is less friction through the device because there is less rope weight and it becomes difficult to control the rate of descent. The currently accepted method is for the soldiers to slide down a roughly braided rope, approximately 50 mm in diameter, in the same manner as a fireman sliding down a pole. The technique is called fast-roping and requires no special equipment or devices. While this works well for a single soldier and his personal gear, it does not work when the soldier has an additional load such as a medical kit, a crew-served weapon, a canine unit, or other heavy equipment.

Accordingly, there exists a need for a load balancing descending device which automatically adjusts the amount of friction applied to the rope based on the combined weight of the soldier and his load. Additionally, a need exists for a load balancing descending device which automatically balances the weight of the soldier and his load against the weight of the free end of the rope in order to maintain a controlled rate of descent. Furthermore, there exists a need for a load balancing descending device which is easy to engage and disengage and allows a user to control the rate of descent with one hand.

SUMMARY

A load balancing descending device for controlling the descent of a user descending on a rope carrying a load is provided. The rope has a decreasing rope free end as the user descends. The load balancing descending device comprises a first plate and a second plate. A first pin is positioned between the first plate and the second plate with the first pin spacing the first plate from and pivotally connecting the first plate to the second plate and the combined first plate and second plate having a first side and a second side. A second pin is positioned between the first plate and the second plate with the second pin spaced from the first pin. An attachment mechanism is formed in the first side of the combined first plate and second plate for attaching a user and/or load. The rope is wrapped in a serpentine manner about the first pin and the second pin between the first plate and the second plate with the rope free end exiting the combined first plate and second plate from the second side. As the user descends the rope, the length and weight of the rope free end decreases thereby causing the load balancing descending device to rotate moving the rope free end in a general direction from the first side toward the second side and automatically balancing the weight of the user and load against the weight of the rope free end in order to maintain a controlled rate of descent.

In addition, the present invention includes a method for controlling the descent of a user descending on a rope carrying a load. The rope has a decreasing rope free end as the user descends. The method comprises providing a first plate, providing a second plate, positioning a first pin between the first plate and the second plate, spacing the first plate from the second plate, pivotally connecting the first plate to the second plate with the combined first plate and second plate having a first side and a second side, positioning a second pin between the first plate and the second plate, spacing the second pin from the first pin, attaching a user and/or load to the first side of the combined first plate and second plate, wrapping the rope in a serpentine manner about the first pin and the second pin between the first plate and the second plate, exiting the rope free end of the combined first plate and second plate from the second side, descending the rope such that the length and weight of the rope free end decreases, rotating the load balancing descending device, moving the rope free end in a general direction from the first side toward the second side, and automatically balancing the weight of the user and load against the weight of the rope free end in order to maintain a controlled rate of descent.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a sectional side view illustrating a load balancing descending device, constructed in accordance with the present invention;

FIG. 2 is a perspective view illustrating the load balancing descending device of FIG. 1, constructed in accordance with the present invention;

FIG. 3 is an elevational side view illustrating the load balancing descending device of FIG. 1, constructed in accordance with the present invention;

FIGS. 4 a and 4 b are photos illustrating the load balancing descending device of FIG. 1, constructed in accordance with the present invention, with the load balancing descending device in use by a user;

FIG. 5 is an elevational side view illustrating the left side of the load balancing descending device, constructed in accordance with the present invention;

FIG. 6 is another elevational side view illustrating the left side of the load balancing descending device, constructed in accordance with the present invention;

FIG. 7 is still another elevational side view illustrating the left side of the load balancing descending device, constructed in accordance with the present invention;

FIG. 8 is an elevational side view illustrating the right side of the load balancing descending device, constructed in accordance with the present invention;

FIG. 9 is another elevational side view illustrating the right side of the load balancing descending device, constructed in accordance with the present invention;

FIG. 10 is still another elevational side view illustrating the right side of the load balancing descending device, constructed in accordance with the present invention;

FIGS. 11 a-11 d are elevational side views and end views illustrating the load balancing descending device, constructed in accordance with the present invention;

FIG. 12 is an exploded view illustrating the load balancing descending device, constructed in accordance with the present invention; and

FIG. 13 is an elevational side view illustrating a carabiner for use with the load balancing descending device, constructed in accordance with the present invention.

Before explaining the disclosed embodiment of the present invention in detail, it is to be understood that the invention is not limited in its application to the details of the particular arrangement shown, since the invention is capable of other embodiments. Also, the terminology used herein is for the purpose of description and not of limitation.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

As illustrated in FIGS. 1-13, the present invention is a load balancing descending device, indicated generally at 10, for use with large ropes 12, such as found in military operations. As a user descends using the load balancing descending device 10, the load balancing descending device 10 gradually slows the descent by rotating as the length and weight of the free rope 14 decreases. The load balancing descending device 10 of the present invention can be used by military personnel, climbers, and others during any type of climbing activity including, but not limited to, military operations, mountaineering, rock climbing, safety descents during emergencies and rescues, etc. Other uses for the load balancing descending device 10 not specifically set forth herein are also within the scope of the present invention. It should also be noted that the load balancing descending device 10 can be used with small ropes, also.

The load balancing descending device 10 of the present invention is preferably constructed from a steel material, however, constructing the load balancing descending device 10 from other rigid, durable materials is within the scope of the present invention.

As illustrated in FIGS. 2 and 3, the load balancing descending device 10 of the present invention includes a swivel plate 16 having a substantially key-shaped slotted aperture 18, a substantially round aperture 20, and a plurality of carabiner receiving apertures 22. The slotted aperture includes a wide portion 24 and a narrow portion 26. The load balancing descending device 10 further includes a base plate 28 having a first substantially round aperture 30, a second substantially round aperture 32, and a plurality of carabiner receiving apertures 34. A carabiner 36 is receivable within either of the carabiner receiving apertures 22, 34 formed in both the swivel plate 16 and the base plate 28.

As illustrated in FIGS. 5-12, in an embodiment of the load balancing descending device 10 of the present invention, the swivel plate 16 and the base plate 28 have an angled portion 38. The angled portion 38 allows the portion of the swivel plate 16 and base plate 28 about the carabiner receiving apertures 22, 34 to contact each other when assembled together, as will be discussed in further detail below.

As best illustrated in FIG. 12, the load balancing descending device 10 of the present invention further includes a first dowel 40 positionable between the swivel plate 16 and the base plate 28 and a second dowel 42 positionable between swivel plate 16 and the base plate 28. The first dowel 40 and the second dowel 42 are preferably constructed from aviation grade aluminum (2023 T-3) although constructing the first dowel 40 and the second dowel 42 from other rigid, durable materials is within the scope of the present invention.

A first bolt 44 extends through the round aperture 20 on the swivel plate 16, the first dowel 40, and the first round aperture 30 of the base plate 28. The first bolt 44 is secured in place by a nut 46 or the like. Washers 48 and lock washers 50 further maintain the position of the first bolt 44 to the swivel plate 16 and the base plate 28. The connection between the swivel plate 16 and the base plate 28 through the first bolt 44 allows the swivel plate 16 to rotate relative to the base plate 28 and the base plate 28 to rotate relative to the swivel plate 16.

A second bolt 52 extends through the slotted aperture 18 on the swivel plate 16, the second dowel 42, and the second round aperture 32 of the base plate 28. The second bolt 52, similar to the first bolt 44, is secured in place by a nut 46 or the like. Washers 48 and lock washers 50 further maintain the position of the second bolt 52 to the swivel plate 16 and the base plate 28. During use, the second bolt 52 travels from the wide portion 24 of the slotted aperture 18 to the narrow portion 26 of the slotted aperture 26 of the swivel plate 16, being releasably retained therein, as will be described in detail below.

Preferably, the first bolt 44 and the second bolt 52 have a length of approximately four (4″) inches although having a bolt with length greater than or less than approximately four (4″) inches is within the scope of the present invention.

In operation of the load balancing descending device 10 of the present invention, the carabiner 36 is removed from the carabiner apertures 22, 34 and the load balancing descending device 10 is constructed using the first and second dowels 40, 42, first and second bolts 44, 52, washers 48, and lock washers 50, as described above. The swivel plate 16 is then rotated relative to the base plate 28 exposing the first bolt 44 and the second bolt 52. Next, the rope 12 is positioned about the first bolt 44 and the second bolt 52, as best illustrated in FIGS. 1 and 2. The swivel plate 16 is then rotated until the second bolt 52 is received within the wide portion 24 of the slotted aperture 18. The swivel plate 16 is rotated a little further until the second bolt 52 is received within the narrow portion 26 of the slotted aperture 18. Finally, the carabiner 36 is inserted into and releasably secured within the carabiner receiving apertures 22, 34.

The load balancing descending device 10 of the present invention allows a rapid, controlled descent of a user. As illustrated in FIG. 1, as the user descends down the rope 12, the rope tail 14 decreases in length weight thereby causing the load balancing descending device 10 to automatically rotate impeding the movement of the rope 12 about the first and second bolts 44, 52 and creating greater friction between the first and second bolts 44, 52 and the rope 12. Therefore, as the user approaches the ground or other landing area, the user's rate of descent will slow thereby allowing a safe, controlled landing.

In sum, the load balancing descending device 10 of the present invention automatically adjusts the amount of friction applied to the rope based on the combined weight of the soldier and his load. The load balancing descending device 10 automatically balances the weight of the soldier and his load against the weight of the free end of the rope in order to maintain a controlled rate of descent. Furthermore, the load balancing descending device is easy to engage and disengage and allows a user to control the rate of descent with one hand.

The foregoing exemplary descriptions and the illustrative preferred embodiments of the present invention have been explained in the drawings and described in detail, with varying modifications and alternative embodiments being taught. While the invention has been so shown, described and illustrated, it should be understood by those skilled in the art that equivalent changes in form and detail may be made therein without departing from the true spirit and scope of the invention, and that the scope of the present invention is to be limited only to the claims except as precluded by the prior art. Moreover, the invention as disclosed herein, may be suitably practiced in the absence of the specific elements which are disclosed herein. 

1. A load balancing descending device for controlling the descent of a user descending on a rope carrying a load, the rope having a decreasing rope free end as the user descends, the load balancing descending device comprising: a first plate; a second plate; a first pin positioned between the first plate and the second plate, the first pin spacing the first plate from and pivotally connecting the first plate to the second plate, the combined first plate and second plate having it first side and a second side; a second pin positioned between the first plate and the second plate, the second pin spaced from the first pin; attachment means formed in the first side of the combined first plate and second plate for attaching a user or load; wherein the rope is wrapped in a serpentine manner about the first pin and the second pin between the bust plate and the second plate, the rope free end exiting the combined first plate and second plate from the second side; wherein each portion of the rope is free from contact with any other portion of the rope; and wherein as the user descends the rope, the length and weight of the rope free end decreases thereby causing the combined first plate and second plate to rotate moving, the rope free end in a general direction from the first side toward the second side and automatically balancing the weight of the user and load against the weight of the rope free end in order to maintain a controlled rate of descent.
 2. The load balancing descending device of claim 1 upon rotation of the load balancing descending device, the load balancing descending device automatically adjusts the amount of friction applied to the rope based on the combined weight of the user and load.
 3. The load balancing descending device of claim 1 wherein the first plate is a swivel plate having a first aperture and a second aperture the second plate is a base plate having a closed first aperture and a closed second aperture, the first aperture or the swivel plate alignable with the first aperture of the base plate, the second aperture of the swivel plate alignable with the second aperture of the base plate, the first pin is a first securement mechanism extending through the first aperture of the swivel plate and the first aperture of the base plate, the first securement mechanism movable within the first aperture, and the second pin is a second securement mechanism extending through the second aperture of the swivel plate and the second aperture of the base plate.
 4. The load balancing descending device of claim 3 wherein impeding the Movement of the rope about the first and second securement mechanisms creates greater friction between the first and second securement mechanisms and the rope and reducing the rate or descent as the user approaches the landing area.
 5. The load balancing descending device of claim 3 wherein the first aperture of the swivel plate is a substantially key-shaped slotted aperture and the second aperture of the swivel plate is a substantially round aperture, the slotted aperture having a wide portion and a narrow portion, the first securement mechanism moveable front the wide portion of the slotted aperture to the narrow portion of the slotted aperture of the swivel plate.
 6. The load balancing descending device of claim 3 wherein the first aperture of the base plate is a substantially round aperture and the second aperture of the bane plate is a substantially round aperture.
 7. The load balancing descending device of claim 3 and further comprising: a plurality of swivel plate cars bluer receiving apertures formed in the swivel plate; and a plurality of base plate carabiner receiving apertures formed in the base plate; wherein the swivel plate carabiner receiving apertures are aligned with the base plate carabiner receiving apertures.
 8. The load balancing descending device of claim 7 and further comprising: a carabiner receivable within the aligned carabiner receiving apertures.
 9. The load balancing descending device of claim 3 and further comprising: an angled portion formed on each of the swivel plate and the base plate, the angled portions allowing a portion of the swivel plate and base plate to contact earth other when assembled together.
 10. The load balancing descending device of claim 3 wherein the first securement mechanism is a first bolt extending through the first aperture of the swivel plate and the first aperture of the base plate and the second securement mechanism is a second bolt extending through the second aperature of the swivel plate and the second aperture of the base plate, each of the first bolt and the second bolt secured with a nut.
 11. A method for controlling the descent of a user descending on a rope carrying a load, the rope having a decreasing rope free end as the user descends, the method comprising: providing a first plate; providing a second plate; positioning a first pin between the first plate and the second plate; spacing the first plate from the second plate; pivotally connecting the first plate to the second plate, the combined first plate and second plate having a first side and a second side; positioning a second pin between the first plate and the second plate; spacing the second pin from the first pin; attaching a user or load to the first side of the combined first plate and second plate; wrapping the rope in a serpentine manner about the first pin and the second pin between the first plate and the second plate such that each portion of the rope is free from contact with any other portion of the rope; exiting the rope free end of the combined first plate and second plate from the second side; descending the rope such that the length and weight of the rope free end decreases; rotating the combined first plate and second plate; moving the rope free cod in a general direction from the first side toward the second side; and automatically balancing the weight of the user and load against the weight or the rope free end in order to maintain a controlled rate of descent.
 12. The method of claim 11 and further comprising: automatically adjusting the amount of friction applied to the rope based on the combined weight of the soldier and his load.
 13. The method of claim 11 wherein the first plate is a swivel plate having a first aperture and a second aperture, the second plate is a base plate having a closed first aperture and a closed second aperture, the first aperture of the swivel plate alignable with the first aperture of the base plate, the second aperture of the swivel plate alignable with the second aperture of the base plate, the first pin is a first securement mechanism extending through the first aperture of the swivel plate and the first aperture of the base plate, the first securement mechanism movable within the first aperture, and the second pin is a second securement mechanism extending through the second aperture of the swivel plate and the second aperture of the base plate.
 14. The method of claim 13 wherein the first aperture of the swivel plate is a substantially key-shaped slotted aperture and the second aperture of he swivel plate is a substantially round aperture, the slotted aperture having a wide portion and a narrow portion, the swivel plate moveable relative to the base plate.
 15. The method of claim 13 wherein the first aperture of the base plate is a substantially round aperture and the second aperture of the base plate is a substantially round aperature.
 16. The method of claim 13 and further comprising: forming a plurality of swivel plate combiner receiving apertures in the swivel plate; forming a plurality of base plate carabiner receiving apertures in the base plate; and aligning the swivel plate carabiner receiving apertures with the has plate carabiner receiving apertures.
 17. The method of claim 16 and further comprising: inserting a carabiner within the aligned combiner receiving apertures.
 18. The method of claim 13 and further comprising: forming an angled portion on each of the swivel plate and the base plate, the angled portions allowing a portion of the swivel an and base plate to contact each other when assembled together.
 19. A load balancing descending device for controlling the descent of a user descending on a rope, the rope having a decreasing rope free end as the user descends, the descending device comprising: a swivel plate having a first aperture and a second aperture, the first aperture of the swivel plate is a substantially key-shaped slotted aperture and the second aperture of the swivel plate is a substantially round aperture, the slotted aperture having a wide portion and a narrow portion, the first securement mechanism moveable from the wide portion of the slotted aperture to the narrow portion of the slotted aperture of the swivel plate; a base plate having a closed first keyhole slot and a closed second aperture, the first keyhole slot of the base plate is a substantially round aperture and the second aperture of the base plate is a substantially round aperture, the first aperture of the swivel plate alignable with the first keyhole slot of the base plate, the second aperture of the swivel plate alignable with the second aperture of the base plate; a plurality of swivel plate combiner receiving apertures formed in the swivel plat; a plurality of base plain carabiner receiving apertures formed in the base plate, the swivel plate carabiner receiving apertures alignable with the base plate carabiner receiving apertures; carabiner receivable within the aligned carabiner receiving apertures; an angled portion formed on each of the swivel plate and the base plate, the angled portions allowing a portion of the swivel plate and base plate surrounding the aligned combiner receiving apertures to contact each other when assembled together; spacing means for spacing at least a portion of the swivel plate a predetermined distance from at least a portion or the base plate; a first securement mechanism extending through the first aperture of the swivel plate and the first aperture of the base plate; and a second securement mechanism extending through the second aperture of the swivel plate and the second aperture of the base plate; a first hollow dowel positionable between the flirt aperture or the swivel plate and the first aperture of the base plate, the first securement means extending through the first dowel; a second hollow dowel positionable between the second aperture of the swivel plate and the second aperture of the base plate, the second securement means extending through the second dowel; wherein the rope is wrapped in a serpentine manner about the first securement mechanism and the second securement mechanism between the swivel plate and the base plate; wherein each portion of the rope is free from contact with any other portion of the rope; and wherein as the user descends the rope, the length and weight of the rope free end decreases thereby causing the combined first plate and second plate to rotate and automatically balancing the weight of the user and load against the weight of the rape free cod in order to maintain a controlled rate of descent.
 20. The load balancing descending device of claim 19 upon rotation of the load balancing descending device, the load balancing descending device automatically adjusts the amount of friction applied to the rope based on the combined weight of the user and load. 